-2- 



Questions will soon be asked about corn leaf aphids . As yet, we have observed very 

 few of them. They often appear first on grasses, then later on corn. The period of 

 growth between pretassel and pollination is critical for corn. Pull 10 whorls in five 

 places in the field and unroll them to see if aphids are present. If it is dry and 5C 

 percent or more of the plants are infested, the use of diazinon or malathion is recom- 

 mended to individuals. If aerial applications are made, parathion can be used if prop 

 er protective measures are taken. Do not use parathion in seed fields that are to be 

 detasselled by hand. 



SMALL GRAINS 



Cereal leaf beetle infestations are reported by the Illinois Department of Agriculture 

 as much-more common than in the past. New areas of infestation will be announced wher 

 survey work now underway is completed. 



LIVESTOCK 



Face flies are bothering pastured cattle in some areas. Cattle stop grazing, bunch up 

 mill about, switch their tails, and rub their heads as they fight these flies. At the 

 very least, cattle with lots of face flies (15 to 20 or more per animal) usually devel 

 op eye problems. Face flies may also transmit pinkeye disease. For control on dairy 

 cattle, apply a 2-percent, ciodrin oil-base spray at 1 to 2 ounces per animal as often 

 as once a day, if needed. A 1 -percent, ciodrin water-base spray- -applied at 1 pint pe 

 animal per week- -may be used in place of the oil-base spray. Dust bag treatments with 

 insecticides like ciodrin or coral do give effective control of face flies. 



For pastured beef cattle, the ciodrin water-base spray (as suggested for dairy cattle) 

 should be considered. Otherwise, use a head- or back-oiler, wrapped with canvas or bu- 

 lap and saturated with 5-percent solution of toxaphene in oil. This will afford par- 

 tial relief from face flies. Keep the oiler in good repair and well saturated. Do 

 not apply toxaphene to beef cattle within 28 days of slaughter. 



HOMEOWNER PROBLEMS 



Corn earworms are much more numerous than usual in the early fields of sweet corn in 

 southern and central Illinois. Homeowners may need to treat silking sweet corn with 

 carbaryl (Sevin) ; and if so, will need to continue spraying the ear zone every 2 to 3 

 days until the silks are brown. 



Tomato fruitworms (same as corn earworms) could be a problem in ripening tomatoes. 

 These caterpillars tunnel into the tomato fruit, usually next to the stem. Spraying 

 with carbaryl will provide control. There is no time limitation between the last 

 spray and harvesting tomatoes or corn. 



Picnic beetles seem to be very common this year, especially as uninvited guests to 

 picnics or backyard cookouts. These black beetles with four yellow spots are attracte 

 to the odors of rotting fruit and vegetables, or to the smell of any food. 



For control around the home, harvest fruits and vegetables before they become overripe 

 Dispose of spoiled produce. To kill the adult beetles, spray with malathion, diazinon 

 or carbaryl (Sevin) in and around garbage cans. Spraying shrubbery and tall grass wit 

 any of these insecticides before a cookout will greatly reduce the number of these 

 beetles. 



Follow the directions on the label. Check plants that may be injured if sprayed with 

 the insecticide you are using. Either 0.1-percent pyrethrin or 0.5-percent dichlorvos 



